Storage unit



FIG. 1 is a top perspective view of a storage unit showing my new design;

FIG. 2 is a top plan view of the storage unit;

FIG. 3 is a side elevational view of the storage unit;

FIG. 4 is a front elevational view of the storage unit; and,

FIG. 5 is a perspective view of the storage unit with the top closures raised. 

The ornamental design for a storage unit, as shown and described. 